Quote Originally Posted by DanielsDM View Post
...There are some online flow calculators that may be useful. http://www.pressure-drop.com/Online-Calculator/ ...
Funny, that it is exactly what I have been using. I get a Reynold's number of 7-8K for .56 ID (10AN). It does seem to be in the range of being turbulent but that's as much as I can make of it. Commonly used 12AN is still at 5.9-6.7K.
I wonder if turbulence (from too constricted a system) is something I/we should worry about in a closed system? It's not like there is an opportunity for air to be introduced. The pump appears to be capable of dealing with and overcoming the 8+ PSI (or so) drop in the system I have roughly calculated, if accurate. A 12AN size hose drops pressure loss to around 3 PSI.
Again, I'm getting into an area where I lack the educational background to feel very comfortable in spouting off... so what works for me is purely anecdotal.